Thresher-tooth.



C. QUESNELL.

THRESHER TOOTH.

APPLICATION FILED MAR.I0.1915.

1,148,885, Patented July 27, 1915.

CORNELIUS QUESNELL, OF MOSCOW, IDAHO.

THRESI-IER-TOOTH.

Application filed March 10, 1915.

To all whom it may concern:

Be it known that I, CORNELIUS QUnsNnLL, a citizen of the United States, and a resident of Moscow, in the county of Latah and State of Idaho, have invented an Improvement in Thresher-Teeth, of which the following is a specification.

My invention is an improvement in the class of teeth which aroused in the well known cylinder-and-concave thresher. The tooth has a curved base and a radial longi tudinal rib and also transverse ribs formed integrally with the longitudinal rib and tapered from the base outward for the purpose of securing greater or less clearance, as hereinafter explained.

The details of construction are illustrated in the accompanying drawing, in which- Figure 1 is a sectional view illustrating the arrangement of a cylinder and concave provided with my improved teeth, with relation to adjacent parts usually employed in the cylinder-and-concave type oi. machine. Fig. 2 is a perspective view of the tooth.

As shown best in Fig. 2, the tooth has a base 1 which is curved conformably to the cylinder proper to which it is secured. The projecting ends of the base are provided with holes 2 for receiving screws or screwbolts by which the tooth is secured to the longitudinal bars 3 of the cylinder, as shown in Fig. 1.

The curved base 1 is cast integrally with a longitudinal radial rib 4: and a series of lateral or transverse ribs 5. The longitudinal rib 4 is arranged centrally on the base and the transverse ribs are arranged at right angles to it and tapered from the base out- Specification of Letters Patent.

Patented July 27, 1 915.

Serial No. 13,359.

ward, their outer ends being flush or in the same plane with the longitudinal rib. The ends Poi the latter project from the outer transverse ribs of the series. Said ends thus form two right angular edges and each side of each transverse rib also forms'similar edges which act most effectively for removing the grain proper from stalks and chaff.

It is apparent that any number of trans verse ribs may be employed in connection with a single longitudinal rib, that is to say, any number from one upward, but ordinarily a series of four is preferred.

The purpose of tapering the transverse ribs is to vary the clearance between the teeth of the cylinder and the teeth of the concave when the latter is raised or low ered. The concave may have the usual or a special construction of teeth adapted to co operate with the cylinder teeth of my improved form.

In Fig. 1, a cylinder provided with my improved teeth is shown arranged in operative relation to a draper a and a feed roller 7), which parts may be constructed and arranged in the well known manner.

hat I claim is A. thresher tooth comprising a curved base, a radially projecting longitudinal rib having uniform thickness, and a series of transverse ribs formed integrally with said base and longitudinal rib and tapering from the side edges of the base outward, for the purpose specified.

CORNELIUS QUESNELL Witnesses A. L. MORGAN, S. B. H. lWCGOWANZ,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

